开云体育

Hi The similation file of 74HC193 is bellow site. ----------------------------------------------------------------------------------------------------------------------------------

Hi Ron, Thanks for sharing the inline table approach - very useful too! But I can't seem to see what differentiates the step version from the slope version. Can you elaborate please? Thanks, Mike

You would expect one peak to be quite a different from the other, because it is basically nonlinear. Consider a step input going from low resistance to high; the loop gain will be high and the

MOHAMMAD A MAKTOOMI <amaktoomamu@...> wrote: < (http://groups.yahoo.com/group/LTspice/files/%20Temp/ni-opamp2.asc)? When I looked at the waveforms, I noticed that the positive peaks of the 1 MHz

MOHAMMAD A MAKTOOMI <amaktoomamu@...> wrote: Yes indeed, and I think that is why you must do this as a .TRAN analysis. .AC analysis just doesn't work for your case. Then .STEP the frequency.

The problem never went away for me. Until a month or so ago, when you clicked on it, it did open directly (at least in most web browsers). Then that suddenly stopped working, and hasn't worked since.

Helmut, is it possible to represent the information available from transient analysis of (http://groups.yahoo.com/group/LTspice/files/%20Temp/ni-opamp2.asc) in frequency domain? I mean, just as one

Hi Richard, ? Aside from the form Helmut gave you, you can set any resistor to as many changes as you need. The format, which is entered in the resistance window in place of a single value is :

Hello Mark, You could use my uploaded THD simulation. The results from .FOUR agree with my formula. Give it a try. Best regards, Helmut

Thanks a lot, you found where I was wrong. Indeed, I was tricked by the .FOUR function default calculation on 9 harmonics only. I tried with 99 harmonics and got a much different result. The

John, Get over it. Of course, it is silly to specify any parameters to 10 digits, but so what? I'm sure Ikf varies by +/-25%, but so what? Rick

In message <kkf6tn+ghqn@...>, dated Sun, 14 Apr 2013, Helmut <helmutsennewald@...> writes: It isn't how good the models are that is bugging me; it's the unreality of giving the

Thanks! I saw their SPICE models but not that one. And the "Simulation Models" link from the part's page led nowhere.

Hello John, Most models from other vendors don't have Ikf at all. So the models from OSRAM are at least as good as the models from other vendors. I recommend to use the OSRAM models. Best regards,

Greetings, If we make some assumptions then the math becomes easy enough that even I can do it. First, imagine that you are taking a pure sinewave and subtracting a small signal from it to create the

In message <kkf3is+3juc@...>, dated Sun, 14 Apr 2013, Helmut <helmutsennewald@...> writes: Not Helmut's responsibility, but isn't it disquieting that these are given to 10 significant

Hello, The model for the OSRAM SFH4248 is in the file OSRAM-IR-POWERTOPLED.lib http://catalog.osram-os.com/applications/applications.do?folderId=6&favOid=000000030003a11f01ca0023&act=showBookmark#

Hi folks, I'm trying to model an infrared remote control transmitter circuit that I'm designing and haven't had much luck finding a SPICE model for the higher-power IR LEDs like I'm using. In this

In message <759B589F6950452C8C99FA8446748D7E@Maison3>, dated Sun, 14 Apr 2013, basier. philippe <basier.philippe@...> writes: Yes, I did have the problem a few weeks ago, and at that time, I